Concerned but hopeful?

Hi

So my hubby and I are trying for #2 and I'm due to start any day. The last few days my stomach feels like I've been punched, I have to pee every 20-30 min or so and today when I wiped at one point there was a bit of pink and what I thought was the first sign of my period. But it's been several hours now and I have had no signs of it at all... could I be pregnant or is it just my body getting ready for my monthly week of depression? I'm giving myself the next 24 hours before I test if things dont change like they are now.... I know each pregnancy is different so any thoughts are helpful.

Thanks